In 1897, the Troup Mine was superintended by S. H. Cobb of Webb City. Seven shafts were operated, some going 200 feet deep. From 1891 to 1897, over 228 million pounds of zinc and 2,649,730 pounds of lead had been mined from this operation for a total value of over $436,000. (Source: 1897 Annual Report of the State Mine Inspector.)